|
 How
do you hear sounds? Well, since you are currently looking at an ear, this
is a great place to show you!
- outer
ear - traps sound waves and funnels them down the ear canal to the
middle ear
- middle
ear - sound waves cause the eardrum to vibrate much like the membrane
on a drum. These vibrations then move through three little bones called
the hammer, anvil and stirrup.
- inner
ear - when the stirrup vibrates, fluids in the cochlea (fluid-filled
structure shaped like a snail's shell) begin to vibrate. These vibrations
stimulate nerve endings that carry the signal to the brain.
These messages are interpreted as sounds!
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